Created attachment 35473 [details] maven example application with README.md If the request is forwarded, it is not possible to create a ApplicationPushBuilder via the request object. I attached an example maven application which could be deployed to Tomcat 9.0.1 with enabled HTTP/2 support. Stack: ``` java.lang.UnsupportedOperationException: Unable to find the underlying Coyote request object (which is required to create a push request) from the request of type [org.apache.catalina.connector.RequestFacade] org.example.PushFilter.doFilter(PushFilter.java:26) org.tuckey.web.filters.urlrewrite.NormalRewrittenUrl.doRewrite(NormalRewrittenUrl.java:213) org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:171) org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145) org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92) org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:394) ```
It is pretty obvious in the code why it will not work (ApplicationHttpRequest.newPushBuilder uses this to create the push builder, not good), no test case needed here. However, even though I know how to fix it, I don't know yet how to do so without opening up holes or other problems.
This should be fixed in 9.0.2.